12. f3d4 At the moment Black can't drive the knight out with c6-c5, so it's relatively safe on d4, despite not doing much. 12... f5h7 Another option would be to move the bishop to g6. It's hard to say which is better and maybe it doesn't matter much for the position. 13. d1b3 The first new move of the game. 13... d7e5 Centralizing the knight and provoking f2-f4. 14. a2a4 